TY - JOUR A2 - Hariri-Ardebili, Mohammad A. AU - Wang, Fengtao AU - Liu, Xiaofei AU - Liu, Chenxi AU - Li, Hongkun AU - Han, Qingkai PY - 2018 DA - 2018/07/08 TI - Remaining Useful Life Prediction Method of Rolling Bearings Based on Pchip-EEMD-GM(1, 1) Model SP - 3013684 VL - 2018 AB - A trend prediction method based on the Pchip-EEMD-GM(1,1) to predict the remaining useful life (RUL) of rolling bearings was proposed in this paper. Firstly, the dimension of the extracted features was reduced by the KPCA dimensionality reduction method, and the WPHM model parameters were estimated via the kernel principal components. Secondly, the hazard rate was calculated at each time, and the Pchip interpolation method was used to obtain the uniformly spaced interpolation data series. Then the main trend of signal was obtained through the EEMD method to fit the GM(1,1) prediction model. Finally, the GM (1,1) method was used to predict the remaining life of the rolling bearing. The full life test of rolling bearing was provided to demonstrate that the method predicting the hazard data directly has the higher accuracy compared with predicting the covariates, and the results verified the feasibility and effectiveness of the proposed method for predicting the remaining life. SN - 1070-9622 UR - https://doi.org/10.1155/2018/3013684 DO - 10.1155/2018/3013684 JF - Shock and Vibration PB - Hindawi KW - ER -